The Facial Action Code (FAC) was derived from an analysis of the anatomical basis of facial movement. The development of the method is explained, contrasting it to other methods of measuring facial behavior. An example of how facial behavior is measured is provided, and ideas about research applications are discussed. (Author)

Two observational systems were employed to measure the behavior patterns of two elementary-age autistic children and their classroom peers during a free-play period. The results obtained were discussed in terms of their significance for the clinical treatment of autistic behavior, and the evaluation of such treatment. (Author)

This study investigates the reactive effects of observers on interactions between teachers (undergraduates and mothers) and toddlers in a preventive educational program. Findings indicate that the presence of an observer differentially affects interactional patterns in the home. More specifically, undergraduates and toddlers are relatively…

Ninety-six female introductory psychology students differing in terms of the dimensions of neuroticism-stability and introversion-extraversion performed two sets of thirty trials each on a choice reaction time task. On one of the sets of trials the Ss were observed by two female observers and on the other set of trials the observers were not…

This paper presents a research method derived from the functional analysis of behavior currently common among operant behavior therapists. Naturalistic observation, the method used, encompasses behavioral-level description of events, systematic observation and recording by means of codes, assessment of inter-judge reliability, as well as targeting…